INFORMATION PROCESSOR

PROBLEM TO BE SOLVED: To provide an information processor which has a low price, and which can increase its memory capacity easily at a user's option. SOLUTION: The information processor has a disk type record medium 12a, 12b, a driver 13 turning a record medium, a head 33 which performs recording and reproduction of information to the record medium, a main nonvolatile memory 45 which memorizes data stored in the record medium, a memory mounting section 52 equipped with non-volatile expansion memory removable to the outside, and a controller which reads a data equivalent to a memory capacity of the expansion memory from the record medium, and is written in the expansion memory, when the memory mounting section is loaded with the expansion memory. COPYRIGHT: (C)2009,JPO&INPIT